Blends containing chitosan and poly(sodium-4-styrene sulphonate). Compatibility behavior
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Date
2011
Journal Title
Journal ISSN
Volume Title
Publisher
ELSEVIER SCI LTD
Abstract
The phase behavior of blends containing chitosan (CS) and poly(sodium-4-styrene sulphonate) (PSS) was analyzed by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), fourier transform infrared spectroscopy (FOR), dielectric spectroscopy (DRS) and atomic force microscopy (AFM). FTIR and DRS analysis seem to indicate the existence of interactions between sulphonate groups of PSS and -NH2 or -OH or both groups of CS. The study of blends by AFM showed a completely different morphology when compared with that of pure components as nanocrystalline domains appeared as globular agglomerates containing more or less spherical particles instead of the independent nanodomains seen in the neat components, possibly as consequence of interactions between both polymers. (C) 2010 Elsevier Ltd. All rights reserved.
Description
Keywords
Chitosan, Poly(sodium-4-styrene sulphonate), Blends, Compatibility, Atomic force microscopy, Dielectric behavior, POLY(2,6-DIMETHYL-1,4-PHENYLENE OXIDE), POLY(ETHYLENE OXIDE), PHASE-BEHAVIOR, POLYSTYRENE, POLYMERS, DYNAMICS, CHITIN